FILE: main.css */ /* all your original styles */ @media (max-‐width: 53em) { /* styles for 53em and lower */ } @media (max-‐width: 37em) { /* styles for 37em and lower */ } RESPONSIVE RETROFITTING Friday, September 21, 12
‣ Serve the original CSS to large viewports ‣ Serve mobile-first CSS to small viewports ‣ No changes to original CSS RESPONSIVE RETROFITTING Friday, September 21, 12